Connecting using a Database URL

The playhouse module Database URL provides a helper connect() function that accepts a database URL and returns a Database instance.

Example code:

import os
from peewee import *
from playhouse.db_url import connect
# Connect to the database URL defined in the environment, falling
# back to a local Sqlite database if no database URL is specified.
db = connect(os.environ.get('DATABASE') or 'sqlite:///default.db')
class BaseModel(Model):
    class Meta:
        database = db

Example database URLs:

• sqlite:///my_database.db will create a SqliteDatabase instance for the file my_database.db in the current directory.
• sqlite:///:memory: will create an in-memory SqliteDatabase instance.
• postgresql://postgres:my_password@localhost:5432/my_database will create a PostgresqlDatabase instance. A username and password are provided, as well as the host and port to connect to.
• mysql://user:passwd@ip:port/my_db will create a MySQLDatabase instance for the local MySQL database my_db.
• More examples in the db_url documentation.